{"id":"vidhyamitra:city-day:mauritius:1981-04-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mauritius/1981-04-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-16","date_display":"April 16, 1981 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1981,"month":4,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444710.770833,"kali_year":5083,"ahargana":1856245.2708,"sun":{"sidereal_longitude":2.5498,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":145.0242,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":142.4745,"elapsed_within_tithi_degrees":10.4745},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":145.0242,"elapsed_within_degrees":11.6909},"yoga":{"number":12,"name":"Dhruva","sum_longitude":147.574},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":1981,"month":4,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444710.770833,"ahargana":1856245.2708,"kali_year":5083,"ayanamsa_lahiri":23.5916,"grahas":{"sun":{"sidereal_longitude":2.3811279999999897,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":145.93532800000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":2.7583},"mars":{"sidereal_longitude":359.673228,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":350.252628,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":159.45792800000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":4.890328000000011,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":161.128328,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.1927,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.1927,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1981,"month":4,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444710.770833,"kali_year":5083,"ahargana":1856245.2708,"sun":{"sidereal_longitude":2.5498,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":145.0242,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":142.4745,"elapsed_within_tithi_degrees":10.4745},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":145.0242,"elapsed_within_degrees":11.6909},"yoga":{"number":12,"name":"Dhruva","sum_longitude":147.574},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.758,"elongation":142.474},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.758,"opposition_distance":37.526}},"eclipse_window_40days":[]},"city":{"slug":"mauritius","name":"Port Louis, Mauritius","lat":-20.1609,"lon":57.5012,"tz_offset_hours":4,"country":"MU","tier":"diaspora"},"tier2":{"city":{"slug":"mauritius","name":"Port Louis, Mauritius","lat":-20.1609,"lon":57.5012,"tz_offset_hours":4,"country":"MU","tier":"diaspora"},"sunriseLocal":"06:21","sunsetLocal":"17:59","solarNoonLocal":"12:10","dayLengthHours":11.623851733779116,"dayLengthDisplay":"11 Hours 37 Mins 26 Secs","nightLengthDisplay":"12 Hours 22 Mins 34 Secs","moonriseLocal":"15:48","moonsetLocal":"03:41","rahuKala":{"name":"Rāhu Kāla","start":"13:37","end":"15:04","startHours":13.619313281445748,"endHours":15.072294748168137,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:21","end":"07:48","startHours":6.354405947833801,"endHours":7.807387414556191,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:16","end":"10:43","startHours":9.26036888127858,"endHours":10.713350348000969,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:04","end":"09:27","startHours":9.066638019048927,"endHours":9.454099743508232,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:50","end":"07:09","startHours":6.838733103407931,"endHours":7.148702482975374,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:33","startHours":11.778870090264055,"endHours":12.553793539182662,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:48","end":"05:35","startHours":4.804559049996585,"endHours":5.579482498915193,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:23","end":"06:21","startHours":5.385751636685541,"endHours":6.354405947833801,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:06","end":"14:53","startHours":14.103640437019878,"endHours":14.878563885938487,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.778257681612917,"endHours":18.178257681612916,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:28","startHours":17.978257681612916,"endHours":18.462584837187045,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.728257681612916,"endHours":19.478257681612916,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:33","startHours":23.778870090264054,"endHours":24.55379353918266,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:21","end":"07:48","startHours":6.354405947833801,"endHours":7.807387414556191,"quality":"auspicious"},{"name":"Roga","start":"07:48","end":"09:16","startHours":7.807387414556191,"endHours":9.26036888127858,"quality":"inauspicious"},{"name":"Udveg","start":"09:16","end":"10:43","startHours":9.26036888127858,"endHours":10.713350348000969,"quality":"inauspicious"},{"name":"Chala","start":"10:43","end":"12:10","startHours":10.713350348000969,"endHours":12.166331814723359,"quality":"neutral"},{"name":"Labha","start":"12:10","end":"13:37","startHours":12.166331814723359,"endHours":13.619313281445748,"quality":"auspicious"},{"name":"Amṛta","start":"13:37","end":"15:04","startHours":13.619313281445748,"endHours":15.072294748168137,"quality":"auspicious"},{"name":"Kāla","start":"15:04","end":"16:32","startHours":15.072294748168137,"endHours":16.525276214890525,"quality":"inauspicious"},{"name":"Śubha","start":"16:32","end":"17:59","startHours":16.525276214890525,"endHours":17.978257681612916,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:59","end":"19:32","startHours":17.978257681612916,"endHours":19.52527621489053,"quality":"auspicious"},{"name":"Kāla","start":"19:32","end":"21:04","startHours":19.52527621489053,"endHours":21.072294748168137,"quality":"inauspicious"},{"name":"Śubha","start":"21:04","end":"22:37","startHours":21.072294748168137,"endHours":22.61931328144575,"quality":"auspicious"},{"name":"Roga","start":"22:37","end":"00:10","startHours":22.61931328144575,"endHours":24.166331814723357,"quality":"inauspicious"},{"name":"Udveg","start":"00:10","end":"01:43","startHours":24.166331814723357,"endHours":25.71335034800097,"quality":"inauspicious"},{"name":"Chala","start":"01:43","end":"03:16","startHours":25.71335034800097,"endHours":27.26036888127858,"quality":"neutral"},{"name":"Labha","start":"03:16","end":"04:48","startHours":27.26036888127858,"endHours":28.80738741455619,"quality":"auspicious"},{"name":"Amṛta","start":"04:48","end":"06:21","startHours":28.80738741455619,"endHours":30.3544059478338,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:21","end":"07:21","startHours":6.354405947833801,"endHours":7.354405947833801,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:21","end":"08:21","startHours":7.354405947833801,"endHours":8.3544059478338,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:21","end":"09:21","startHours":8.3544059478338,"endHours":9.3544059478338,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:21","end":"10:21","startHours":9.3544059478338,"endHours":10.3544059478338,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:21","end":"11:21","startHours":10.3544059478338,"endHours":11.3544059478338,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:21","end":"12:21","startHours":11.3544059478338,"endHours":12.3544059478338,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:21","end":"13:21","startHours":12.3544059478338,"endHours":13.3544059478338,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:21","end":"14:21","startHours":13.3544059478338,"endHours":14.3544059478338,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:21","end":"15:21","startHours":14.3544059478338,"endHours":15.3544059478338,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:21","end":"16:21","startHours":15.3544059478338,"endHours":16.3544059478338,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:21","end":"17:21","startHours":16.3544059478338,"endHours":17.3544059478338,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:21","end":"18:21","startHours":17.3544059478338,"endHours":18.3544059478338,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:21","end":"19:21","startHours":18.3544059478338,"endHours":19.3544059478338,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:21","end":"20:21","startHours":19.3544059478338,"endHours":20.3544059478338,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:21","end":"21:21","startHours":20.3544059478338,"endHours":21.3544059478338,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:21","end":"22:21","startHours":21.3544059478338,"endHours":22.3544059478338,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:21","end":"23:21","startHours":22.3544059478338,"endHours":23.3544059478338,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:21","end":"00:21","startHours":23.3544059478338,"endHours":24.3544059478338,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:21","end":"01:21","startHours":24.3544059478338,"endHours":25.3544059478338,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:21","end":"02:21","startHours":25.3544059478338,"endHours":26.3544059478338,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:21","end":"03:21","startHours":26.3544059478338,"endHours":27.3544059478338,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:21","end":"04:21","startHours":27.3544059478338,"endHours":28.3544059478338,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:21","end":"05:21","startHours":28.3544059478338,"endHours":29.3544059478338,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:21","end":"06:21","startHours":29.3544059478338,"endHours":30.3544059478338,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.031190587921168,"eotMinutes":0.015291116598477705,"ayanamsa":23.5916}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Dvādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"mauritius"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 16, 1981 CE · Port Louis, Mauritius · Vidhyamitra","description":"April 16, 1981 CE for Port Louis, Mauritius: Śukla Dvādaśī, sūryodaya 06:21, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mauritius/1981-04-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mauritius/1981-04-16","sa":"https://sa.vidhyamitra.com/city/mauritius/1981-04-16","hi":"https://hi.vidhyamitra.com/city/mauritius/1981-04-16","x-default":"https://vidhyamitra.com/city/mauritius/1981-04-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T05:01:52.519Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-06-02T05:01:52.519Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T05:01:52.519Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}